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STRUCTURAL MATERIALS, METAL SCIENCE

Komarov G. V., Aung Thu Han, Androsova N. I., Zdanovskiy Ye. M. — Properties of polymer materials at product load-carrying ability repairs and recovery

Polymers properties which are to be taken into consideration when repairing products from polymer materials using adherence junctions and mechanical fastening to reintegrate components and (or) join repair lining are considered. Composition and structure of polymer materials are analysed in detail, particularly those of polymer composites, their specific mechanical data, peculiarities of thermophysical characteristic and chemical properties.
Key words: polymer materials, composite materials, making-good procedure, adherence junction, mechanical, thermalphysic and chemical properties

BLANK PRODUCTION

Ivanova V. A., Lapteva Ye. N., Turov A. M. — Foundry coke quality assessment

Macroporous structure investigation results of different batches of foundry coke are covered. Sizes of pores and of interpore space in sample surfaces, class distribution of these sizes, as well as correlation coefficients between density and macroporosity characteristic are determined.
Key words: foundry coke, macroporosity, pore size, interpore space, quality

TECHNOLOGIES AND EQUIPMENT FOR MACHINING, PHYSICOTECHNICAL PROCESSING, NON-CUTTING SHAPING

Nazarov Yu. F., Ivanayskiy A. V., Yurchenko A. A. — Effectiveness increase of the toothed gear fabrication technique for the aircraft units

An innovative method of fabricating spur arched toothed gears applying grinding operation is developed to be used for aircraft reducer components manufacturing. The method ensures required precision quality class. Also a grinding head construction allowing to increase precision by one-two quality classes and service life by twice is designed for manufacturing application.
Key words: gearing, grinding tool, reducer, durability, precision, service life

Moiseyev Yu. I. — Assessment of effective groove process conditions on the NC-controlled turning multiprocessing machines

Results of сomparative evaluation of groove slotting process efficiency on the NC-controlled turning machines instead of drawing as a separate production step are described. Dependences of methods’ prime and execution time on cutting speed, length and groove number are considered. It is shown that upholding of certain parameters ensures higher efficiency of slotting process.
Key words: NC-controlled machines, groove slotting, drawing, productivity

Barats F. Ya., Kochetkov A. V. — Residual stress investigation at finishing-and- strengthening treatment of high-speed steel

Investigation results of flnishing-and-strengthening treatment characteristic influence on performance and general qualitative properties of the diamond smoothing process by tools provided with natural diamond are covered.
Key words: surface plastic deformation, finishing-and-strengthening treatment, tool, diamond indenter, roughness parameter

TOOLING PRODUCTION

Terekhova O. A., Margolit R. B. — Performance enhancement of the machines with vary-drive of operative parts motion

The ways of improvement of such exploitation characteristics as productivity, quality of work, material capacity, energy consumption, noise level are considered at transition to regulated working elements motion drives.
Key words: electric motor, optimisation, power, torgue, material capacity, energy consumption

SPECIAL TECHNOLOGIES

Chebykin V. G. — Technology features of hatch and branch pipe insets into tank shells

Questions of calculation and construction of the developments of openings in the cowlings of reservoirs are examined. Are for the first time proposed and described the new forms of oval curves — "reservoir" ovals (oval curves R-1 and R-2), whose practical value is obvious.
Key words: reservoir, hatchway, development of opening, oval curve, "reservoir" oval, connection with the minimum clearances, guaranteed dearance

Vasilyev A. S., Kondakov A. I., Shiganov I. N. — Effectiveness of laser hardening application to ensure wear resistance of machine components

Research results of the melting-free CW laser hardening application possibility to ensure wear resistance of the external cylindrical surfaces of the high-precision parts are described, as well as comparative analysis data of different schemata of outer cylindrical surfaces laser hardening.
Key words: laser hardening, wear resistance, cylindrical surfaces

Guerasimenko A. A., Andryuschenko T. A. — Microbial corrosion prevention of copper in sea and seaside media

Research results of copper and its alloys microbial corrosion features in sea atmosphere are covered. It is established that microorganisms (fungi and bacteria) may intensify corrosion extension at the initial stage, worsening product external view (decorative properties), but not resulting in considerable damage of metal. This phenomenon is caused by the origin of toxic for microbe oxides and salts on the copper surface.
Key words: microbial corrosion, microorganisms, sea atmosphere, oxides

TESTING AND DIAGNOSTICS METHODS IN ENGINEERING INDUSTRY

Pilyuguin S. O., Shitikov V. S., Mezintsev Ye. D. — Resolving ability comparison of flaw detectors with acoustic phased array

Comparison tests results of two flaw detectors with acoustic phased array (OmniScanMX and ISONIC 2009) and finite-element modelling of signal receiving process from a reflector to corroborate influence of active aperture on resolving ability are described. The principal equipment difference influencing on the resolving ability is the number of the active channels.
Key words: acoustic phased array, resolving ability, flaw detector

INSTRUMENT-MAKING TECHNOLOGIES

Velikanov V. B., Denisov Yu. V., Nefedov A. Yu., Pakhomov I. I. — Production methods development of miniature components for precision devices

This work examines the solution to the problem of enhancement of efficiency of manufacturing activity in the course of manufacturing of precision instruments parts. Different types of technological operations defining the structure of the machining production have been analyzed, and fundamental factors affecting the nature of the manufacturing process have been determined. Key role in enhancement of efficiency is played by the design features of the working objects, such as: miniaturization of instruments, implementation of new design solutions and new materials. For the manufacturing activity, several groups of parts having particular features have been marked out; for each group peculiarities of route and processing technologies, features of equipment, tools and processing modes with regard to material properties have been examined.
Key words: precision instruments, design features, route technology, processing technology, manufacturing strategy, labor intensity, electrical discharge machining

PROCESSES AND PRODUCTION AUTOMATION AND CONTROL, CAD SYSTEMS

Rakhmilevich Ye. G. — Calculation automation of processability quantitative indices using product design and production parameterization

The article presents issue of increasing automation of the technological design using the design and technological parameterization. Highlighted the problem of automating calculations of quantitative indicators of manufacturability and suggested the direction solutions to problems using calculation modules.
Key words: manufacturing automation, manufacturability, computer-aided design

MATHEMATICAL MODELLING, CALCULUS OF APPROXIMATIONS AND SOFTWARE SYSTEMS

Yusubov N. D. — Working accuracy matrix model in multiple-cutter turning machining

A model of accuracy in the matrix multi pocket single-coordinate adjustment is developed. On the basis of the developed models revealed the degree of influence on the accuracy of technological factors, including the structure adjustment, deformation properties of the subsystems of the technological system, the cutting. The developed model can predict the accuracy of processing accuracy for the given conditions (structure adjustment, properties of technological systems, the processing conditions), creating a methodological basis of CAD multi pocket turning.
Key words: multi pocket adjustment, matrix models exactly, multi pocket turning, stray fields

STANDARDIZATION AND PRODUCT QUALITY CONTROL

Timofeyev B. P., Abramchouk M. V. — Towards new echelon of accuracy of domestic toothed gears, transmissions and reducers

Necessity of developing new toothed gears and transmission standards on the base of GOST 1643—81 in accordance with ISO recommendations is considered, as well as some advantages and disadvantages of the GOST 1643—81. Comparison of the standards GOST 1643—81 and 21098—82 and standard ISO 1328 is carried out.
Key words: toothed gears, train of gears, accuracy, compound-chain mechanism, standards

PRODUCTION ORGANIZATION

Alexandrov M. N., Kalandarishvili Sh. N., Kobzar A. I. — Quality control system improvement on the basis of professional qualifications certification

The perspective creation of an assessment and certification qualifications system in spacerocket branch — formation and development of the appraisal center and qualifications certification and the expert and methodical center in space-rocket branch is considered. The developed methodological providing the project is considered and the further directions of assessment and qualifications certification development in space-rocket branch are described.
Key words: personnel certification, qualifications assessment, quality management

FOREIGN EXPERIENCE

Potapova G. S. — Review of the foreign journals

INFORMATION

Ivanov A. N. — The 13th International exhibition Metalloobrabotka’2012

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